WO2011093119A1 - Dispositif d'éclairage, dispositif d'affichage et récepteur de télévision - Google Patents

Dispositif d'éclairage, dispositif d'affichage et récepteur de télévision Download PDF

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Publication number
WO2011093119A1
WO2011093119A1 PCT/JP2011/050247 JP2011050247W WO2011093119A1 WO 2011093119 A1 WO2011093119 A1 WO 2011093119A1 JP 2011050247 W JP2011050247 W JP 2011050247W WO 2011093119 A1 WO2011093119 A1 WO 2011093119A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide plate
light guide
positioning
light
optical member
Prior art date
Application number
PCT/JP2011/050247
Other languages
English (en)
Japanese (ja)
Inventor
泰守 黒水
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to US13/521,450 priority Critical patent/US20120281153A1/en
Publication of WO2011093119A1 publication Critical patent/WO2011093119A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Definitions

  • the present invention relates to a lighting device, a display device, and a television receiver.
  • an illumination device (backlight device) is provided.
  • the illumination devices are roughly classified into direct type and edge light type according to the mechanism.
  • the edge light type illumination device includes a light source, a light guide plate, an optical sheet, and a housing for housing these components (Patent Document 1).
  • an optical member such as an optical sheet so as not to be displaced.
  • a positioning method for example, it is conceivable to place a positioning pin on the container and to insert a hole formed in the optical sheet. This type of positioning method is disclosed in Patent Document 2 below.
  • the container is necessarily increased in size.
  • the container is preferably as small as possible (narrow frame), and there is room for improvement in this regard.
  • An object of this invention is to provide the illuminating device which made the miniaturization of a container and positioning of an optical member compatible. Moreover, it aims at providing a display apparatus provided with such an illuminating device, and also a television receiver provided with such a display apparatus.
  • the illuminating device of the present invention includes a light source, a light guide plate that is disposed so that an end surface thereof faces the light source, and that guides light incident on the end surface to a light output surface, and an optical that covers the light output surface of the light guide plate.
  • a member, a positioning part that positions the optical member along the surface direction with respect to the light guide plate, the light source, the light guide plate, and a container that contains the optical member, and the positioning part includes: It consists of a positioning hole formed in the optical member, and a positioning pin provided in the light guide plate and fitted in the positioning hole.
  • the optical member can be positioned with respect to the light guide plate by fitting the positioning hole through the positioning pin. And since the positioning pin is formed in the light-guide plate, a container does not enlarge.
  • -It is set as the structure which hangs the said optical member by providing the said positioning pin in the upper part of the said light-guide plate. In this way, since the lower side of the optical member becomes free, even if the optical member expands and contracts due to the heat of the light source, the optical member cannot be wrinkled.
  • the positioning pins are formed integrally with the light guide plate. In this way, the number of parts does not increase, so the cost merit is high.
  • a pressing member having a pressing wall that comes into contact with the tip end of the positioning pin and presses the light guide plate between the receiving body and the housing is provided.
  • the pin height of the positioning pin is set higher than the thickness of the optical member. In this way, a certain gap can be created between the optical member and the pressing wall. If there is no gap at all, the pressing wall sandwiches the optical member, so that the optical member is easily wrinkled. However, with this configuration, there is no such concern.
  • the positioning pin is provided at a position avoiding the front of the light source. If it does in this way, a positioning pin will be located in the optical path of the light radiate
  • the optical member can be positioned with high accuracy with respect to the light guide plate at one place having a small clearance.
  • the other positioning holes can be fitted to the positioning pins relatively easily.
  • the positioning hole is set so that the hole becomes larger from the central side to the peripheral side of the optical member.
  • the optical member can be positioned at the center of the light guide plate (the center of the screen), and the peripheral side has a sufficient clearance between the pin and the hole, so the work of aligning the positions is easy. Can be performed.
  • the display device of the present invention includes the above-described illumination device and a display panel that performs display using light from the illumination device. Furthermore, the television receiver of the present invention includes the display device. An example of the display panel is a liquid crystal panel. Such a display device can be applied to a display of a television or a personal computer, for example, and is particularly suitable for a large screen.
  • the illuminating device which made compatible the miniaturization (narrow frame) of the container and positioning of the optical member can be provided.
  • a display device and a television receiver using the lighting device can be provided.
  • FIG. 1 is an exploded perspective view showing a schematic configuration of a television receiver according to Embodiment 1 of the present invention.
  • the exploded perspective view which shows schematic structure of the display apparatus with which a television receiver is equipped Sectional view of the display device cut in the Y direction
  • the perspective view which shows the positioning structure of an optical sheet
  • the perspective view which shows the positioning structure of the optical sheet which concerns on Embodiment 2 of this invention.
  • the perspective view which shows the positioning structure of the optical sheet which concerns on Embodiment 3 of this invention.
  • the television receiver TV includes a display device 10, front and back cabinets Ca and Cb that are accommodated so as to sandwich the display device 10, a power supply PW, a tuner T, and a stand S. And is configured.
  • the display device 10 has a horizontally long rectangular shape as a whole, and includes a liquid crystal panel 11 that is a display panel and an illumination device 21 that is an external light source.
  • the horizontal direction (longitudinal direction) of the display device 10 is assumed to be the X direction
  • the height direction (short direction) of the display device 10 is assumed to be the Y direction
  • the depth direction of the display device 10 is assumed to be the Z direction. .
  • the liquid crystal panel 11 has a horizontally long rectangular shape as shown in FIG.
  • the liquid crystal panel 11 is configured such that a pair of glass substrates are bonded together with a predetermined gap therebetween, and liquid crystal is sealed between the glass substrates.
  • One glass substrate is provided with a switching element (for example, TFT) connected to a source wiring and a gate wiring orthogonal to each other, a pixel electrode connected to the switching element, an alignment film, and the like.
  • the substrate is provided with a color filter and counter electrodes in which colored portions such as R (red), G (green), and B (blue) are arranged in a predetermined arrangement, and an alignment film.
  • a polarizing plate is disposed on the outside of both substrates.
  • the lighting device 21 includes a light guide plate 31, a pair of LED substrates 40, an optical sheet (an example of the “optical member” in the present invention) 50, and a chassis (in the present invention).
  • An example of “container” 60 and a pressing member 70 are provided.
  • the chassis 60 is made of metal and has a horizontally long rectangular shape.
  • the chassis 60 is composed of a bottom plate 61 and side plates 65 rising from the outer ends of the respective sides of the bottom plate 61, and has a shallow box shape that opens toward the surface side that is the display surface side.
  • the bottom plate 61 is a flat surface, and the light guide plate 31 is disposed at the center thereof.
  • the light guide plate 31 performs a function of guiding incident light to the surface 31a which is a light exit surface.
  • the light guide plate 31 is made of a highly transparent resin (acrylic or the like) and has a horizontally long rectangular shape that is substantially the same shape as the liquid crystal panel 11.
  • the light guide plate 31 is provided with a reflection sheet 32 on the back surface side, and is disposed at the center of the bottom plate 61 with the surface 31a, which is a light emitting surface, facing upward.
  • the light guide plate 31 is positioned in the plane direction with respect to the chassis 60 by positioning means (not shown).
  • the end surfaces (both end surfaces in the Y direction) 33 of the light guide plate 31 are light incident surfaces.
  • both side plates 65a and 65b facing the end surface 33 of the light guide plate 31 are light source mounting surfaces, and light is emitted to the inner walls of the side plates 65a and 65b.
  • the LED substrate 40 is attached with the surface facing the end surface 33 of the light guide plate 31.
  • the LED board 40 includes a base material 41 and an LED (Light Emitting Diode) 45 mounted on the base material 41.
  • the base 41 is made of the same metal as the chassis 60, such as an aluminum material, and has a structure in which a wiring pattern (not shown) made of a metal film such as a copper foil is formed on the surface thereof via an insulating layer. .
  • the base material 41 extends along the longitudinal direction of the light guide plate 31, and the LEDs 45 are arranged in a line at regular intervals on the surface.
  • the LED 45 is a white light emitting diode in which an LED chip is sealed with a resin material, and has a rectangular shape in plan view.
  • the optical sheet 50 has a horizontally long rectangular shape, and has a thin sheet shape.
  • the optical sheet 50 include a diffusion sheet, a lens sheet, and a reflective polarizing sheet, and can be appropriately selected from these.
  • the optical sheet 50 is arranged so as to overlap the surface 31a side of the light guide plate 31 and covers the surface 31a of the light guide plate 31 over the entire surface. And it has the structure positioned along the surface direction with respect to the light-guide plate 31 by the positioning part P. As shown in FIG.
  • the positioning portion P includes positioning pins 35 formed integrally with the light guide plate 31 and positioning holes 55 formed in the optical sheet 50.
  • the positioning pins 35 are provided on the surface 31 a side of the light guide plate 31 and at positions outside the display area of the liquid crystal panel 11. More specifically, as shown in FIG. 4, the positioning pins 35 are provided at two places in the upper center of the light guide plate 31 and two places at the upper ends (four places in total). In addition, the upper part said here means that it is located in the upper side, when the display apparatus 10 is stood like FIG. Each positioning pin 35 has a cylindrical shape and protrudes forward.
  • the pin height (pin height based on the surface of the light guide plate) H1 of each positioning pin is set to be higher than the thickness H2 of the optical sheet 50 (see FIG. 5).
  • the positioning pins 35 are located between the LEDs 45 arranged in a line and avoid the front of the LEDs 45 (in other words, (Position shifted in the X direction).
  • the positioning holes 55 are formed corresponding to the positioning pins 35 formed in the light guide plate 31, and are provided at two locations in the upper center of the optical sheet 50 and two locations at the upper ends (total of four locations). Each positioning hole 55 is paired with the positioning pin 35 and is configured to fit the corresponding positioning pin 35 into the hole.
  • the optical sheet 50 can be positioned along the surface direction (XY direction) with respect to the light guide plate 31 by fitting each positioning pin 35 through each positioning hole 55 formed in the optical sheet 50.
  • the positioning pins 35 and the positioning holes 55 are both provided above the light guide plate 31 and the optical sheet 50, and are not provided elsewhere. Therefore, when the lighting device 21 is set up, the optical sheet 50 is suspended by the positioning pins 35.
  • the pressing member 70 is formed in a frame shape extending along the outer peripheral end of the light guide plate 31 as shown in FIG.
  • the pressing member 70 is made of a synthetic resin (a black material having a high light shielding property) and has an L-shaped cross section.
  • the pressing member 70 is mounted so as to cover the chassis 60, the side wall 75 of the pressing member 70 is fitted to the outside of the side plate 65 of the chassis 60, and the front wall (an example of the “holding wall” of the present invention) 71 is provided.
  • the structure overlaps the outer peripheral edge of the light guide plate 31.
  • the front wall 71 of the pressing member 70 is in contact with the pin tip of the positioning pin 35 formed on the light guide plate 31, and is configured to press and hold the light guide plate 31 with the bottom plate 61 of the chassis 60. (See FIG. 5).
  • a reflection sheet 72 is attached to the back surface of the front wall 71. The reflection sheet 72 is located on the side of the LED 45 and has a function of reflecting light leaking to the side to the light guide plate 31 side.
  • the liquid crystal panel 11 is disposed on the front surface side of the pressing member 70 so as to overlap the outer peripheral edge portion with the front wall 71. Then, the frame-shaped bezel 13 is attached from the surface side of the liquid crystal panel 11 so that the liquid crystal panel 11 is integrally held with respect to the lighting device 21.
  • the illumination device 21 causes the LED 45 to emit light
  • the light enters the end face 33 and then travels through the light guide plate 31 while being scattered. And it reflects on the surface 31a side which is a light-projection surface with the reflective sheet 32 provided in the back surface of the light-guide plate 31.
  • the surface 31a of the light guide plate 31 emits light strongly.
  • the light emitted from the optical sheet 50 provided on the front surface 31a side of the light guide plate 31 is uniformly diffused to illuminate the liquid crystal panel 11 uniformly from the back side.
  • the optical sheet 50 can be positioned with respect to the light guide plate 31 by fitting the positioning holes 55 to the positioning pins 35.
  • the positioning pins 35 are formed on the light guide plate 31. Therefore, it is not necessary to secure a space for standing the positioning pins 35 on the chassis 60, so that the chassis 60 can be downsized (narrow frame).
  • the positioning pin 35 is provided on the light guide plate 31 to suspend the optical sheet 50. In this way, the lower side of the optical sheet 50 becomes free. Therefore, even if the LED 45 expands and contracts due to heat generation, the optical sheet 50 cannot be wrinkled.
  • the pin height of the positioning pin 35 is set higher than the thickness of the optical sheet 50. In this way, a certain gap can be created between the front wall 71 of the pressing member 70 and the optical sheet 50. If there is no gap at all, the front wall 71 sandwiches the optical sheet 50, so that the optical sheet 50 is easily wrinkled. However, with this configuration, there is no such concern.
  • the positioning pin 35 is provided at a position avoiding the front of the LED 45. If it does in this way, the positioning pin 35 will be located out of the optical path of the light radiate
  • Embodiment 2 of the present invention will be described with reference to FIG.
  • the positioning pins 35 are provided at the four upper positions of the light guide plate 31, and the optical sheet 50 is suspended by the four positioning pins 35.
  • two positioning pins 35 are added to both ends of the light guide plate 31 in the X direction, and the optical sheet 50 is suspended by a total of eight positioning pins 35. .
  • the optical sheet 50 can be stably suspended. Moreover, since the contact point of the front wall 71 increases from four to eight, the light guide plate 31 can be firmly pressed by the pressing member 70.
  • the third embodiment has a structure in which the optical sheet 50 is suspended by passing the positioning holes 55 on the optical sheet 50 side through the positioning pins 35 provided on the upper portion of the light guide plate 31.
  • the difference from the first embodiment is that the number of positioning pins 35 and positioning holes 55 is changed from 4 (even) to 5 (odd), and the hole diameter M of the positioning holes 55 is set at the installation location. It is in the point which changes according to it. More specifically, in the third embodiment, as shown in FIG. 8, five positioning pins 35 a, 35 b, 35 c, 35 d, and 35 e are provided side by side on the upper portion of the light guide plate 31. On the other hand, in the upper part of the optical sheet 50, five positioning holes 55a, 55b, 55c, 55d, and 55e are provided side by side corresponding to the positioning pins 35a to 35e on the light guide plate 31 side. The diameter M of the five positioning holes 55a to 55d is set to a larger value from the center (center in the longitudinal direction) to the periphery (both ends in the longitudinal direction) of the optical sheet 50.
  • the hole diameter M of the positioning hole 55c located at the center of the optical sheet 50 is the smallest.
  • the hole diameters M of the positioning holes 55b and 55d located on both the left and right sides are large, and the hole diameters M of the positioning holes 55a and 55e located at both ends of the optical sheet 50 in the X direction are the largest.
  • the pin diameters (pin diameters) of the positioning pins 35a to 35e to be mated are set to the same diameter.
  • the clearance (gap) of the positioning hole 55 with respect to the positioning pin 35 becomes wider from the center of the optical sheet 50 toward the periphery (both ends in the longitudinal direction).
  • the positioning hole 55 can be easily fitted to the positioning pin 35 on the peripheral side where the fitting is loose, and the positioning operation of the positioning hole 55 with respect to the positioning pin 35 (assembly) Work) can be performed easily.
  • the clearance is narrow on the center side and the fitting is strict, the optical sheet 50 can be positioned with high accuracy in the center portion with respect to the light guide plate 31 without being displaced. Therefore, with this, it is possible to achieve both assembling workability and positioning performance of the optical sheet 50.
  • the one in which the positioning pins 35 are integrally formed on the light guide plate 31 is exemplified.
  • the positioning pins 35 can be separated from the light guide plate 31.
  • the positioning pin 35 and the positioning hole 55 are both illustrated in a circular shape, but it is only necessary that both (the pin 35 and the hole 55) can be fitted to each other.
  • a rectangular shape is also possible.
  • the optical sheet 50 is positioned by the four positioning pins 35 provided on the light guide plate 31 is shown.
  • the number of positioning pins may be two or more, and is not limited to four.
  • the number of optical sheets 50 is singular. However, a plurality of optical sheets 50 may be used. In this case, positioning holes 55 are formed in each optical sheet 50. In other words, they may be passed through and fitted to the positioning pins 35 of the light guide plate 31, respectively.
  • the optical sheet 50 is shown as an example of the optical member of the present invention, but the optical member includes a diffusion plate and the like.
  • the hole diameter M is set small so that the clearance with respect to the positioning pin 35 may become narrow.
  • the optical sheet 50 can be positioned with high accuracy with respect to the light guide plate 31 by the fitting action of the positioning hole 55 and the positioning pin 35 having a narrow clearance.
  • the four positioning holes 55 having a wider clearance can be easily fitted to the positioning pins 35, the assembling workability is good.
  • an LED substrate using LEDs as light emitting elements is shown as an example of a light source.
  • other types of light sources such as a cold cathode tube and an organic EL can also be used.
  • a TFT is used as a switching element of a display device (liquid crystal display device).
  • the present invention can also be applied to a liquid crystal display device using a switching element other than TFT (for example, a thin film diode (TFD)).
  • a switching element other than TFT for example, a thin film diode (TFD)
  • the present invention can be applied to a liquid crystal display device for monochrome display.
  • liquid crystal display device using the liquid crystal panel as the display panel has been exemplified.
  • present invention can also be applied to display devices using other types of display panels.
  • the television receiver provided with the tuner is exemplified, but the present invention is also applicable to a display device not provided with the tuner.
  • SYMBOLS 10 Display apparatus, 11 ... Liquid crystal panel, 21 ... Illuminating device, 31 ... Light guide plate, 31a ... Surface (an example of the "light-emitting surface” of this invention), 33 ... End surface, 35 ... Positioning pin, 40 ... LED board, 45... LED (an example of the “light source” of the present invention), 50... An optical sheet (an example of the “optical member” of the present invention), 55. 70 ... Pressing member, 71 ... Front wall (an example of the "holding wall” of the present invention), TV ... TV receiver, P ... Positioning portion

Abstract

L'invention concerne un dispositif d'éclairage pour lequel sont réalisés un corps de boîtier comportant un cadre étroit, et l'alignement d'un élément optique. Le dispositif d'éclairage comprend : un substrat à LED (40) ; une plaque guide de lumière (31) qui est agencée de telle manière que sa surface d'extrémité (33) fait face au substrat à LED (40) ; une feuille optique (50) qui couvre la surface d'émission de lumière (31a) de la plaque guide de lumière (31) ; une section d'alignement (P) qui aligne la feuille optique (50) sur la plaque guide de lumière (31) dans la direction de la surface ; et un châssis (60). La section d'alignement (P) est formée d'un orifice d'alignement (55) pratiqué dans la feuille optique (50) et d'une broche d'alignement (35) qui est placée sur la plaque guide de lumière (31) et qui est assujettie dans l'orifice d'alignement (55). La feuille optique (50) peut être alignée sur la plaque guide de lumière (31) en introduisant la broche d'alignement (35) dans l'orifice d'alignement (55) et en l'assujettissant à l'intérieur. Du fait que la broche d'alignement (35) est formée sur la plaque guide de lumière (31), la taille du châssis (60), c'est-à-dire du corps de boîtier, n'augmente pas.
PCT/JP2011/050247 2010-01-29 2011-01-11 Dispositif d'éclairage, dispositif d'affichage et récepteur de télévision WO2011093119A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/521,450 US20120281153A1 (en) 2010-01-29 2011-01-11 Lighting device, display device and television receiver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010018368 2010-01-29
JP2010-018368 2010-01-29

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WO2011093119A1 true WO2011093119A1 (fr) 2011-08-04

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JP2013037974A (ja) * 2011-08-10 2013-02-21 Seiko Epson Corp 照明装置、液晶表示装置および電子機器
WO2014012239A1 (fr) * 2012-07-17 2014-01-23 深圳市华星光电技术有限公司 Dispositif d'affichage à cristaux liquides et son module de rétroéclairage
US20140085576A1 (en) * 2012-09-27 2014-03-27 Apple Inc. Light Guide Plates and Optical Films with Mating Alignment Features
WO2015063852A1 (fr) * 2013-10-29 2015-05-07 堺ディスプレイプロダクト株式会社 Dispositif d'affichage
CN105705986A (zh) * 2013-11-08 2016-06-22 堺显示器制品株式会社 显示装置
US9810834B2 (en) 2013-11-25 2017-11-07 Sakai Display Products Corporation Optical sheet holding structure and display apparatus
US10048517B2 (en) 2014-11-28 2018-08-14 Sakai Display Products Corporation Backlight device and liquid crystal display apparatus
US10114170B2 (en) 2014-10-17 2018-10-30 Sakai Display Products Corporation Display apparatus

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US8708541B2 (en) * 2012-09-18 2014-04-29 Shenzhen China Star Optoelectronics Technology Co., Ltd. Backlight module and display panel
CN106575493B (zh) * 2014-08-28 2021-08-27 索尼公司 显示装置
CN107247364B (zh) * 2017-07-27 2021-01-26 京东方科技集团股份有限公司 一种背光模组及显示装置
CN107490888B (zh) * 2017-09-14 2020-09-04 海信视像科技股份有限公司 一种显示装置

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JP2003036718A (ja) * 2002-07-01 2003-02-07 Sharp Corp 照明装置及び液晶表示装置
JP2005158707A (ja) * 2003-11-07 2005-06-16 Sharp Corp バックライト装置及びこれを用いた液晶表示装置
JP2008204842A (ja) * 2007-02-21 2008-09-04 Toyoda Gosei Co Ltd バックライト装置

Cited By (11)

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Publication number Priority date Publication date Assignee Title
JP2013037974A (ja) * 2011-08-10 2013-02-21 Seiko Epson Corp 照明装置、液晶表示装置および電子機器
WO2014012239A1 (fr) * 2012-07-17 2014-01-23 深圳市华星光电技术有限公司 Dispositif d'affichage à cristaux liquides et son module de rétroéclairage
US20140085576A1 (en) * 2012-09-27 2014-03-27 Apple Inc. Light Guide Plates and Optical Films with Mating Alignment Features
WO2015063852A1 (fr) * 2013-10-29 2015-05-07 堺ディスプレイプロダクト株式会社 Dispositif d'affichage
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JPWO2015068256A1 (ja) * 2013-11-08 2017-03-09 堺ディスプレイプロダクト株式会社 表示装置
CN105705986B (zh) * 2013-11-08 2019-05-10 堺显示器制品株式会社 显示装置
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